'Psych' 100th episode: A Madeline Kahn shout-out and 5 more things to look forward to

'Psych' 100th episode: A Madeline Kahn shout-out and 5 more things to look forward to

"Psych" is celebrating 100 episodes by airing a guest-star-filled spectacular that pays homage to the movie "Clue." Here are some juicy tidbits to tide you over until March 27, "Psych"-Os.Everyone knows that "Clue" stars Martin Mull, Christopher Lloyd and Lesley Ann Warren are guest-starring. One co-star who could obviously not be there is Madeline Kahn, who sadly passed away in 1999 of ovarian cancer. But there are several nice shout-outs to her "Clue" appearance. Awww.The "Psych" intro gets the "Clue" treatment -- might be our favorite special credits sequence the show has done.Shawn gets invited to this mysterious party by none other than a singing telegram girl (check out the above video). It's nice to see this one doesn't get shot. Steve Valentine guest-stars as Billy Lipps, a former rock star who went to jail for murder. Viewers will be delighted to hear Valentine play some guitar and flex the golden pipes as Lipps.There's a...